Choosing between the ALPES SL126/182(75) and SL126/182(96) starts with understanding what the numbers describe. Both are thermal break sliding door options, but the published sash-width dimensions differ. For a villa terrace, garden-facing living room or balcony opening, compare the actual door layout alongside these specifications before selecting a configuration.
What is the difference between SL126/182(75) and SL126/182(96)? ALPES lists a 75 mm sash width for the (75) version and a 96 mm sash width for the (96) version. Both specification tables list 126 mm for the two-track frame wall width and 182 mm for the three-track version, together with sliding and lift-sliding opening options. The sash-width difference alone does not establish which complete door performs better.
SL126/182 sliding door specifications at a glance
The figures below come from the official pages for the SL126/182(75) thermal break sliding door and the SL126/182(96) thermal break sliding door. The table preserves the site's parameter labels so buyers can discuss the same dimensions with the ALPES team.
| Published parameter | SL126/182(75) | SL126/182(96) |
|---|---|---|
| Sash Width | 75 mm | 96 mm |
| Frame Wall Width — two tracks | 126 mm | 126 mm |
| Frame Wall Width — three tracks | 182 mm | 182 mm |
| Profile Thickness | 2.0 mm | 2.0 mm |
| Profile Grade | 6060-T66 | 6060-T66 |
| Glass Sash Thickness | 55 mm | 55 mm |
| Frame Width | 36 mm | 36 mm |
| High / Low Track Height | 43 mm / 8 mm | 43 mm / 8 mm |
| Opening Method | Sliding / Lift-Sliding | Sliding / Lift-Sliding |
“Glass Sash Thickness” describes the published sash parameter; it is not a specification for glass thickness. Likewise, the listed frame and sash dimensions should be checked against a dimensioned section drawing before using them to assess the finished appearance.
Does a 75 mm sash width mean a slimmer-looking door?
It is a useful starting point for an appearance comparison. The (75) product page emphasizes a narrow-edge design. However, the view through a completed opening also depends on the perimeter frame, meeting sections between panels, panel count and the selected arrangement. A single sash-width field does not describe every visible profile.
Ask for an elevation and section drawing of each version using the same opening dimensions. Mark the visible widths at the side frame and where adjacent panels meet. This makes the visual comparison specific to your room and avoids treating a catalogue dimension as the finished central sightline.
How should you compare two-track and three-track layouts?
Start with the route people need through the doorway. Then ask ALPES to draw the fixed and moving panels, their travel direction and their positions when fully open. Track count alone does not tell you the final clear opening.
For example, a garden-facing living room may need both a convenient everyday passage and a wider opening for gatherings. Submit those two uses with the same measured opening, and request proposed panel layouts. Compare clear passage, panel stacking, handle positions and screen arrangement before settling on two or three tracks.
Both versions list sliding and lift-sliding options. Have the quotation name the proposed operating mechanism and hardware, then confirm how that configuration will operate with your selected panel dimensions and glazing.
What do the 43 mm and 8 mm track heights tell you?
The product tables identify high-track and low-track heights of 43 mm and 8 mm. These figures are useful for discussing the sill detail, but they do not describe the completed transition between indoor and outdoor flooring.
Provide the proposed finished floor levels and ask for a coordinated threshold section. For an exposed terrace, include information about overhead cover and the planned external drainage. Confirm the intended threshold configuration and its supporting performance information as part of the door proposal.
Which details belong in a comparable quotation?
Request both versions against one project brief. Otherwise, a price difference may reflect different glass, hardware or panel layouts rather than the sash-width option.
- Opening schedule: give each doorway an ID, width, height and quantity; identify whether the dimensions describe the building opening or the requested frame size.
- Location and exposure: provide the project city, floor level, opening orientation and whether the doorway faces an exposed terrace or sheltered area.
- Panel layout: show fixed and moving panels, opening direction, preferred track count and the clear passage you need.
- Glass and operation: describe your privacy, daylight and comfort priorities, then request the proposed glazing build-up, hardware and operating method in writing.
- Finish and threshold: specify the preferred color, screen requirement, internal and external floor levels, and requested sill arrangement.
- Evidence and supply scope: request applicable test documentation for the offered configuration, plus a clear list of included accessories, packing and delivery terms.
Frequently asked questions
Is SL126/182(96) automatically stronger than SL126/182(75)?
That conclusion cannot be drawn from sash width alone. Compare the proposed panel sizes, reinforcement, glazing, hardware and supporting test information for each complete configuration. The published dimensions are a starting point for selection, not a complete structural comparison.
Does 55 mm mean the door uses 55 mm thick glass?
No. The product tables label 55 mm as “Glass Sash Thickness.” Ask for a separate glazing specification that identifies the glass panes, cavities and overall glass-unit thickness included in the quotation.
Can I compare insulation using only these specifications?
No. Matching profile dimensions do not establish matching thermal performance. Request a whole-door thermal value with its units, test or calculation method, and the glazing and size to which it applies before making a performance comparison.
Which version should I shortlist for a villa?
If a narrow-edge appearance is a priority, include the (75) version in the drawing review. Compare the (96) version on the same opening and project requirements. ｓｅｌｅｃｔ the proposal that documents the desired appearance, passage width, operation and performance for that opening.
Prepare your SL126/182 project enquiry
Send your opening schedule, project location, preferred layout and floor-level details to request a window and door project quote. Ask ALPES to identify the proposed SL126/182 version, track arrangement, glazing and hardware so you can compare the complete door specification before ordering.
